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Xp External Storage Limit


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5 replies to this topic

#1 rowal5555

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Posted 03 October 2008 - 01:17 AM

The reason I ask is that I had 2 internal drives, 320 and 200GB, and 2 external USB of 250GB each. As none were big enough to back up my 320GB C: drive, I just installed a Verbatim 500GB USB. This install went fine but I have lost the 2 x 250's. Any idea why this would happen?

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#2 KoanYorel

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Posted 03 October 2008 - 01:57 AM

Part of this is probably due to XP Cache problems. There is a limit. Sorry, but that's the total of my knowledge (google search) on the subject.
With the addition off the 500GB external along with your two large internals, you probably exceeded your cache limit, which cut off input to the other two drives.

Hopefully, another here will provide more info.

I'll be watching this thread as I'm very curious also.
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#3 rowal5555

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Posted 03 October 2008 - 04:11 AM

Thanks KY

I figured it could be something like that. Guess I just keep them turned off and turn on the ones I want to use at the time. See what happens.

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#4 hamluis

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Posted 03 October 2008 - 06:01 PM

Hmm...I currently have 2 500s, 1 80GB, and 2 250s...connected on this system and I have had more installed. I have had 3 500s, 1 80, and 3 250GB drives connected and functioning properly.

I'm not aware of any cache limitation that impairs hard drive performance/use...especially so since there are 1TB drives being sold these days...but we know that I'm here to learn :thumbsup:.

My only limitation was connections, which I overcame by installing a SATA/IDE controller card to supplement the motherboard.

And...I guess that I thought that hard drives contain their own cache, if I can believe the specs.

Anyway, this seems to be a decent enough reference to get a grip on what is and what is not (regarding caches): http://en.wikipedia.org/wiki/Cache

Louis

#5 rowal5555

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Posted 04 October 2008 - 07:03 PM

I contacted HP email support, and received this reply -

Dear Rob,

Thank you for contacting HP Total Care.
I understand from your email that 2 x 250 external hard drives are not recognised in your Pavilion a1555a Desktop PC.
I am glad to help you in this regard. 

Rob, this issue might be due to corrupt USB drivers.
To resolve this issue, I recommend you download and update BIOS. (Link for this PC).

1. At the File Download screen, click the Save button.
2. At the Save As screen, save the file to your Desktop.
3. If a message appears stating that the file already exists, click YES to overwrite file.
4. Double-click the icon for the update downloaded to your desktop, and then click NEXT.
5. Follow on-screen instructions.
6. If prompted to restart the system upon completion of the update, click YES and allow system to restart.

After installing BIOS update, I recommend you reinstall USB drivers by performing the steps mentioned below:

1. Click Start and select Control Panel. 
2. Double-click the system icon. If the System icon is not found
  directly under Control Panel, click the Performance and Maintenance 
  icon and then click the System icon.
3. The System properties Window opens. You can open the System
  Properties window directly by pressing the Windows key and
  Pause/Break key simultaneously. 
4. Click the Hardware tab and then click the Device Manager button.
5. Click the plus (+) sign next to the Universal Serial Bus controllers.
6. Right-click the USB device under this Category and select 
  Uninstall. In the Confirm Device Removal dialog box, click OK.
7. Remove all the additional USB devices in the same manner.
8. Restart the computer.  

The computer will auto detect the USB device and install the required drivers to run the device

  NOTE: If the system prompts for the Windows XP CD, specify the 
  location as C:\Windows\i386 or C:\Windows\i386\drivercache. 

Upon the completion of these steps, the USB device should work normally.

If issue persists, then please reply to this message and we will be happy to assist you further. 

For information on keeping your HP and Compaq products up and running, please visit our Web site at: http://www.hp.com/go/totalcare 


Have a Nice Day. --



I received an error msg while following these steps and had to do a couple of hard reboots when Windows refused to shut down, but persisted and all seems good now with all drives recognised.



Cheers

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#6 hamluis

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Posted 05 October 2008 - 11:47 AM

Well done, thanks for posting the resolution :thumbsup:.

Louis




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